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Author:
迎锋 徐
GeoGebra
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中华人民共和国国旗
正方形雪花图案
盈利與虧蝕
球体的截面
常见四边形是否是双心四边形
Discover Resources
柏拉圖宇宙模型
勝敗機率
柱體頂棱
tan(x) = x
可控九九乘法口诀表
Discover Topics
Perimeter
Addition
Limits
Polynomial Functions
Linear Programming or Linear Optimization